Furnace-wall



U. S. AJACOBUS. FURNACE WALL.

APPLICATION FILED APR. Io. 191e. 1,341,645, Patented June 1, 1920.,

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D. S. J'ACOBUS.

FURNACE WALL.

APPLlcATIoN FILED APR.10,1916.

Patented June 1,-

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BY /um showing the tie tion, I

UNITED STATES PATENT OFFICE.

1. DAVID S. JACOBUS, OF JERSEY CITY', NEW JERSEY, ASSIGNOR TO THE BABCOCK 8a WILGOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW l JERSEY.

FURNACE-WALL.

Specification of Letters Patent.

Application filed April 10, 1916. Serial No. 90,058.

To all whom t may concern:

Be it known that I, DAVID S. JAooUs, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Furnace- Walls, of which the following is a specification.

The present invention relates to certain improvements in the construction of walls for boiler furnaces, and will be understood by reference to the accompanying drawings, in which Figure l is a vertical longitudinal section through a portion of a Babcock & Wilcox boiler provided with my improved wall construction; Fig. 2 is a front view partly in section, the section being on the plane of the line 2--2 of Fig. 1; Fig. 3 is a horizontal section on the line 3--3 of Fig. 2; Fig. 4 is an enlarged horizontal section of one form of the special refractory blocks with engaging pieces; Fig. 4A is a view of a modified form of block; Fig. 5 is a partial elevation, partly broken away, showing the form of brick of Fig. 4; Fig. 6 is a side view of two courses of the refractory blocks showing the tie connections, the inner surfaces of the blocks being substantially flush with the inner surface of the wall; F ig. 7 is an end view of one of the tie pieces; Fig. 8 is a perspective view, partly broken away, and Fig. 9 is an end view, partly in section, pieces placed horizontally instead of vertically. Similar reference numerals indicate similar parts in the several views.

To illustrate one application of my invenhave shown it in connection with a Babcock & Vilcox boiler which comprises a bank of generatingtubes 1 expanded into front and rear headers 2 and 3, respectively. The boiler is shown as fired with an underfeedstoker of well known construction. The brickwork of the front wall 5 of the furnace rests upon the stoker ledge plate, said plate consisting of the top plates 4 of the .fuel magazines or retorts 4 between the twyer boxes 6 and the top plates 6 of said boxes, which rest upon theretort plates, the wall thus terminating at the upper parts.of the stoker mechanism. The parts which form the sides of the retorts and twyer boxes have integral webs 42 which rest upon inner struts 7 beneath the front wall. The plates 4 are supported upon the sides of the retorts, and the plates 6 are, in turn, supported upon plates 4. Thus the struts assist 1n supporting the wall. The struts 7 rest upon beams 8 and are spaced at intervals across the front of the Stoker so that they do not interfere with the Stoker' mechanism. The longer outer struts 7 2 are simply to support the outer parts of the stoker. I do not claim herein the construction just described, as the same is covered in other patent applications.

To maintain the alinement of the front wall and to prevent movement thereof inward or outward, I build a part of the wall of one or more horizontal courses which have refractory blocks 9 therein, said blocks having recesses 10 in the sides thereof, as shown in Fig. 4. I lay one or more courses of these special blocks in the wall and when more than one course 1s used I, preferably interlock them by means of metallic tie pieces ll of general T-form, as shown in Fig. 7, having lateralflanges or side extensions of the T-heads 12 which fit the recesses 1() in the tiles. These tie pieces are also provided at their outer portions with extensions 122 forming lugs adapted to be engaged by the inner flanges of Z-bars 13 secured in a horizontal position tothe inner face of the front casing 14. The tie pieces are placed in position by moving them outwardly from the inside of the furnace chamber and then turning them vertically into position where their lugs engage the Z-bar fianges. The blocks 9 are placed into position between the tie pieces 11 so that when the wall is completed the recesses of the blocks are engaged by the T-heads l2 of the tie pieces, and the ends of the tie pieces project above and below the courses, as shown in Fig. 8. The blocks are reduced silghtly in width at the ends which engage the tie pieces so as to provide proper spaces for the webs of the tie pieces. The tie pieces 1l may slide horizontally along the Z-bars, thus allowing sidewise expansion of the courses formed by the blocks. The expansion of the wall in a vertical direction will cause the blocks to slide vertically over the tie pieces, and the tie pieces may also shift vertically. The wall may be completed by adding tiling or rows of ordinary lire-brick above the special blocks 9 if desired, as shown in Fig. 8.

The front portions of the tie pieces ll, with their lugs 122, 'extend into the space between the casing 14 andthe front faces of the blocks-9, the blocks being preferably so set that their front faces areffiush with the surfaces of the Aportions of the bricksbelow and above the blocks 9, as shown in Fig. 8. This permits the insertionof the 'tie pieces 11 and the making of repairs from inside the furnace chamber without removing any portion of the metallic front be seen that any tendency of the wall to lracked over lin two steps instead of lracked over Vin a single step, as in Fig. 1.

'casing 14.

If it is found necessary to replace some of the blocks `9 near Vthe middle of the course, one block will be chipped out from inside the furnace chamber and removed, and then all of the remaining blocks may be removed by sliding each of them sidewise until the lateral flange of the T-heads 12 of the tie piece ,11 is cleared, when the block may be withdrawn. Similarly, the blocks Vmay be replaced from inside the furnace chamber, each block vbeing moved toward the front and then sidewise until a flange 12 is engaged in the recess 10 in the block. The last block to be inserted will have its side edges between the front of the block From the foregoing description, it ,will

lean inward will be resisted by the casing 14, by reason of the lugs 122 engaging with ,the Z- bars 13 rigidly secured to said casing.

Any outward movement will, of course', be resisted by the casing itself.

In many cases it is not necessary.- to use the steel casing -14 shown in Figs. land 8; and the wall may be supported in other ways than that shown in Fig. 1. VIn the structure shown'in Fig. 6, the tie pieces are held by two cross-members 15 in the,

form of I-bars with no outer wall casing. These Lbars serve to prevent the wall from moving inward, and, at the same time, resist outward movement.

In the structure illustrated in 9, 'the tie pieces 11 are placed horizontally instead of vertically, and threecourses of the special refractory blocks are shown laid upV with a wall of the same width as the usual blocks.V The members 16 against which the projecting ends or lugs of the tie pieces 11 are made to rest are run vertically instead of horizontally'. As the tie pieces 11 may slide along' the members 16,v the expansion of' the'wall upward cannot cause' an undue strain. Anyl sidewise expansion of the. wall will cause the tiles 9 to slip ,over the heads of the tie pieces 11, which, again prevents undue strains being brought` 'to bear on the tie pieces or brickwork.

What I claim isz- 1. A vertically extending furnace wall builtup of courses of'blocks, one or more of the courses having grooved or recessed blocks, a fixed member and metallic tie pieces engagingV the fixed member and the grooves or recesses of the blocks and arranged to allow the blocks to move in any direction in a generally vertical plane, the' tie pieces assisting in holding the wall in proper alinement.

'builty up of courses ofxblocks, one or more of thecourses having grooved -or recessed blocks, a fixed :member and metallic tie pieces engaging theiixed member and the 2. A vertically extending furnace wall 'i grooves or recesses ofthe blocks and arranged to allow the blocks to move in any direction in a generally vertical plane,the tie pieces assisting in holding the wall in proper alinement', and an outer wall casing having portions engaging the metallic tie pieces.'v 3., A vertically extending furnace wall built up of courses of blocks, one or more of blocks, a fixed member', and vertically extending metallic tie pieces engaging the p Vfixed member and the grooves or recesses of the blocks and arranged to allow the blocks to move in any direction in la generally vertical plane, the tie pieces aiding to hold the wall in proper alinement.

4. A steam boiler furnace having a vertically extending wall with an opening' at the bottom thereof, means beneath the wall'at the'opening to support the wall above the opening, a fixed member and tie pieces in the wall and engaging the fixed member and arranged to allow the wall to movein any direction in ajgenerally vertical plane and` to assist in maintaining the wall in aline- 5. A furnace wall comprising one or more courses having grooved or' recessed blocks, a fixed member, metallic tie pieces laid alternately with the blocks and engaging the i grooves or recesses and the fixed member to assist in holding the wall in alinement, and

a plurality ofy verticahspaced-apart struts assisting to support the wall.

6. A furnace comprising one or more courses having grooved or recessed blocks, a

fixed member, metallic tie. pieces engaging the grooves or recesses and the fixed member to assist in holding the wall in alinement while allowing relatively free movement of the wall in any direction in a generally ver- 95 l the courses having grooved or recessedY Y a .plurality of vertical,

tical plane, and

the

spaced-apart struts assisting to support wall.

7. A steam boiler furnace having a front wall, a stoker mechanism upon a part of which the wall rests, and a plurality of struts underneath the stoker mechanism for supporting the same and the wall superimposed thereon, at least a portion of the :front wall having means for holding it against inward bulging.

8. A steam boiler furnace having a front wall, a stoker mechanism upon a part of which said wall rests, struts underneath the stoker mechanism for supporting the same and the 'wall superim posed thereon, the wall having means for holding it against either inward or outward movement.

9. A steam boiler furnace having a vertically extending front wall, a stoker upon a part ot' which the wall rests, a fixed member, grooved or recessed blocks in the wall, and tie pieces engaging the fixed member and the grooves or recesses and arranged to allow the blocks to move in any direction in a generally vertical plane and to assist in maintaining the wall in alinement.

1U. A boiler furnace having a front wall, a stoker mechanism extending under the wall, and the wall resting thereon, a plurality of vertical struts for reinforcing the stoker and aiding in supporting the wall, and means engaging the wall for holding it in alinement above the stoker mechanism.

1l. A steam boiler furnace having a front wall, a plurality of spaced-apart stoking mechanisms operating beneath the wall, the

lower part of the wall terminating at the upper part'ot' the stoking mechanism, a plurality of ing to support the Wall,

vertical, spaced-apart struts assista fixed member and and a plurality of metallic tie pieces in the Wall and engaging with the fixed member to assist in holding the wall in alinement.

12. A steam boiler furnace having a front wall comprising one or more courses having grooved or recessed blocks, a fixed member, metallic tie pieces engaging the grooves or recesses of the blocks and engaging with the fixed member to assist in holding the wall in alinement, a plurality of spaced-apart stoking mechanisms operating beneath the wall, and a plurality of vertical, spaced-apart struts assisting to support the wall.

, 13. A steam boiler furnace having a front wall, a plurality of spaced-apart stoking mechanisms comprising retorts and twyer boxes, a part of the Wall resting on the mechanisms, a fixed member, metallic tie pieces in the Walland engaging with the fixed member to assist in holding the wall in alinement, and a plurality of spaced-apart struts beneath the twyer boxes assisting to support the wall.

14. A steam boiler furnace having a front wall, a plurality of spaced-apart stoking mechanisms operating beneath the Wall and a plurality of vertical struts located in the spaces between the separated stoker mecha nisms and assisting to support the Wall, a fixed member, and metallic tie pieces in the wall and engaging the fixed member to assist in holding the wall in alinement while allowing movement of the wall in any direction in a generally vertical plane.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

havin s. JaooBUs. Witnesses'.

CHARLES A. JONES, EDITH CAMP. 

